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Journal articles on the topic 'Restrictor'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Zheng, Yueqing, Guangwei Yang, Hailong Cui, and Yu Hou. "Improving the stiffness of the aerostatic thrust bearing by using a restrictor with multi-orifice series." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 12 (2020): 1881–91. http://dx.doi.org/10.1177/1350650119898957.

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To improve the stiffness of the orifice-type aerostatic bearing, a new construction of orifice restrictor with multiple orifices in series was proposed to enhance the restriction effect. The restriction effects of the restrictors with multiple orifices in series were studied numerically. Based on a circular aerostatic thrust bearing with a central feedhole, the effect of the bearing stiffness improved by the restrictors with multiple orifices in series was studied. The results show that the aerostatic bearing with the restrictors with multiple sub-orifices in series shows higher maximal bearin

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2

Jeffery, J. A. "Efficacy of Two Types of Femoral Cement Restrictor in Total Hip Arthroplasty." HIP International 7, no. 1 (1997): 28–33. http://dx.doi.org/10.1177/112070009700700104.

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Distal occlusion of the femoral canal in total hip arthroplasty is important for cement pressurisation. Failure to adequately restrict cement may result in earlier prosthetic loosening and a longer column of distal cement which may make revision surgery more difficult. A standard plastic restrictor (Hardinge type) was compared with a bone plug restriction method in a randomised, prospective trial of 50 patients. Both types of restrictor failed to adequately restrict cement in over 50% of cases.

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3

Zhang, Xiao Feng, and Bin Lin. "Theoretical Research on Aerostatic Rectangular Guideways with Finite Difference Method." Key Engineering Materials 339 (May 2007): 371–76. http://dx.doi.org/10.4028/www.scientific.net/kem.339.371.

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The load capacity and stiffness of the aerostatic rectangular guideways, which apply annular orifice restrictor and porous restrictor respectively, were analyzed with finite difference method in this paper. A program for solving the pressure distribution, load capacity and stiffness is programmed with VB. The calculated results show that the rise of supply pressure is good for improving the load capacity and stiffness of guideways. The decrease of the orifice diameter in annular orifice restriction and the permeability in porous restriction is advantageous to improve the stiffness of guideways

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4

Chen, Chu Wei, Wei Du, Jia Qi Sun, Wei Liu, Yuan Chang, and Wei Dong. "Simulation Analysis and Design of Intake Restrictor of FSAE Race Car." Applied Mechanics and Materials 602-605 (August 2014): 751–56. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.751.

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For the intake restrictors which are designed in line with FSAE race stipulations, this paper carries out compute simulation on the convergent section and divergent section of the intake restrictors via CFD software; the paper systemically analyzes the distribution characters of its flow field, thus obtaining optimal design scheme. It finds through simulation that: when the converging half angle of the restrictor is less than 45°, the outlet flow of the restrictor will decrease as the converging half angle increases; meanwhile, the divergence half angle will affect the outlet flow of the restr

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5

Li, Yuntang, Yueliang Ye, Ruirui Li, Pengfeng Wang, and Fangfang Zhang. "Structure design and performance analysis of aerostatic thrust bearing with compound restrictors." MATEC Web of Conferences 355 (2022): 03070. http://dx.doi.org/10.1051/matecconf/202235503070.

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Aerostatic thrust bearing compensated by multi-orifices and porous material restrictor simultaneously is proposed to improve the static performance of the bearing. Load Carrying Capacity (LCC), stiffness and the flow field characteristics of the bearing are obtained by Computational Fluid Dynamic (CFD) simulation. The influences of supply pressure, orifice number, orifice diameter, orifice distribution, porous material thickness and permeability coefficient on the bearing performance are analysed. It is indicated that LCC and stiffness of the bearing with compound restrictors are much higher t

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6

Liu, Zichao, Wei Pan, Changhou Lu, and Yongtao Zhang. "Numerical analysis on the static performance of a new piezoelectric membrane restrictor." Industrial Lubrication and Tribology 68, no. 5 (2016): 521–29. http://dx.doi.org/10.1108/ilt-07-2015-0098.

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Purpose This paper aims to establish an accurate mathematical model of a piezoelectric membrane restrictor that can be applied to control the shaft’s centerline orbit. Design/methodology/approach The methodology uses three coupled equations to establish a mathematical model of the piezoelectric membrane restrictor – Reynolds equation, the membrane deformation equation and the flow rate equation. A data identification method is used to propose the flow rate formulas for the piezoelectric membrane restrictor. Findings It has been found that the structural parameters, the membrane center deformat

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7

Khakse, Prashant G., and Vikas M. Phalle. "Restrictor-based studies of hybrid hole-entry conical journal bearings." Industrial Lubrication and Tribology 73, no. 5 (2021): 708–17. http://dx.doi.org/10.1108/ilt-10-2020-0379.

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Purpose This paper aims to describe how successfully a particular restrictor delivers its best in increasing the conical journal bearing performance. The restrictors are used in the hole-entry conical journal bearing subjected to hybrid mode. Thus, the restrictors, like constant flow valve (CFV), orifice and capillary, are studied comparatively. Design/methodology/approach Numerical simulation for the bearing results with the three restrictors are obtained by using finite element method (FEM) under the well-known modified Reynolds equation. Findings When the hole-entry conical journal bearings

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8

Sushil, Pant, Kumar Pankaj, and Kishor Ranjan. "Design and Analysis of Air Intake System for Single Cylinder Engine." International Journal of Trend in Scientific Research and Development 2, no. 2 (2018): 357–79. https://doi.org/10.31142/ijtsrd8388.

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Our understanding of Air flow behavior around an object makes us better designer in order to achieve better performances from our automobiles. In this paper we present an analysis of air flow via air intake system required to meet FSAE norms in SUPRA Vehicles.The aim of this project is to create a flow restriction device to be fitted in the SAE Society of Automotive Engineers car being built by Team Zenith, GB Pant Engineering College, New Delhi. The car is an open wheeled race vehicle, designed to go from 0 60 mph in under 4 seconds and have a top speed of about 80 90 mph.An Air intake system

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9

Lu, Feng, Zhenzhong Wang, Pengli Lei, and Yi Chen. "Study on the Static Characteristics of a Pre-Pressure Single-Action Membrane-Type Restrictor Used in a Single Oil Pad." Machines 10, no. 5 (2022): 302. http://dx.doi.org/10.3390/machines10050302.

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In order to further improve the static stiffness of the hydrostatic bearing with the membrane-type restrictor, in this study, a static characteristics model of the pre-pressure single-action membrane-type restrictor (PSMR) is derived, and the criteria for achieving the optimum stiffness of the restrictor are summarized. A PSMR design method following the criteria of optimal stiffness is proposed. Then, the effect of design parameters on the performance of the restrictor is accurately evaluated by numerical simulation and orthogonal experiment with the grinder oil pad, as an example. Finally, t

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10

Lu, Feng, Zhenzhong Wang, Pengli Lei, and Yi Chen. "Study on the Static Characteristics of a Pre-Pressure Single-Action Membrane-Type Restrictor Used in a Single Oil Pad." Machines 10, no. 5 (2022): 302. http://dx.doi.org/10.3390/machines10050302.

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In order to further improve the static stiffness of the hydrostatic bearing with the membrane-type restrictor, in this study, a static characteristics model of the pre-pressure single-action membrane-type restrictor (PSMR) is derived, and the criteria for achieving the optimum stiffness of the restrictor are summarized. A PSMR design method following the criteria of optimal stiffness is proposed. Then, the effect of design parameters on the performance of the restrictor is accurately evaluated by numerical simulation and orthogonal experiment with the grinder oil pad, as an example. Finally, t

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11

Cui, Hailong, Yang Wang, Xiaobin Yue, Yifei Li, and Zhengyi Jiang. "Numerical analysis of the dynamic performance of aerostatic thrust bearings with different restrictors." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 3 (2018): 406–23. http://dx.doi.org/10.1177/1350650118780599.

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This study utilizes a dynamic mesh technology to investigate the dynamic performance of aerostatic thrust bearings with orifice restrictor, multiple restrictors, and porous restrictor. An experiment, which investigates the bearing static load capacity, was carried out to verify the calculation accuracy of dynamic mesh technology. Further, the impact of incentive amplitude, incentive frequency, axial eccentricity ratio, and non-flatness on the bearing dynamic performance was also studied. The results show incentive amplitude effect can be ignored at the condition of amplitude less than 5% film

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12

Mizumoto, Hiroshi, Taiki Sunahara, Yoshito Yabuta, et al. "Novel Diaphragm-Control Restrictor for Precision Hydrostatic-Bearing Spindle." Key Engineering Materials 516 (June 2012): 463–68. http://dx.doi.org/10.4028/www.scientific.net/kem.516.463.

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A novel diaphragm-control restrictor (DCR) is proposed for improving the performance of the hydrostatic-bearing spindle used in machine tools. The unique function of the proposed DCR is the wide adjustability of its restrictor characteristic. A two-step restriction system is adopted for the DCR; a spool restrictor is used as the first step restrictor. By changing the restrictor resistance of the spool restrictor, the effect of the active control in the DCR, the second step restrictor, can be altered. The proposed DCR is incorporated into a hydrostatic bearing supporting a precision spindle, an

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13

Li, Peng, Han Chen, and Xue Dong Chen. "Performance Study of Aerostatic Bearings with Arrayed Microhole Restrictors." Advanced Materials Research 311-313 (August 2011): 386–91. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.386.

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Micro-vibration of aerostatic bearings has been the bottleneck in the improvement of the moving and positioning accuracy of ultra-precision fabrication and metrology equipments. In this study, a new type of aerostatic bearing restrictor has been proposed. The prototype of arrayed microhole restrictor, instead of the conventional single hole restrictor was developed with the aim of reducing the harmful micro-vibration of aerostatic bearings. Computational fluid dynamics (CFD) was employed to numerically calculate the air flow field. It is found that the employment of arrayed microhole restricto

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14

Yongtian, Kang, Xiao Wensheng, Zhang Dagang, Zhang Liang, Zhou Chouyao, and Li Mingang. "Performance validation and dynamic response analysis of a deepwater cable bending restrictor." Underwater Technology 37, no. 3 (2020): 95–101. http://dx.doi.org/10.3723/ut.37.095.

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The deepwater cable bending restrictor is an important protective device for risers, umbilicals and cables in offshore engineering, protecting cable structure by controlling minimum bending radius. Its mechanical properties are analysed based on the numerical analysis model and finite element analysis (FEM) of ø175. The sensitivity analysis of using quantity of bending restrictors is also performed to show the effect of the quantity on bending stiffness. A testing scheme of bending stiffness of the bending restrictor is then formulated based on its structure. From numerical analysis results th

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15

Shen, Xiaoyan, Jing Yu, Jianlong Yin, and Dongsheng Li. "Experimental Study of See-Saw Mode Nano-Vibration on Orifice-Type Restrictors." Applied Sciences 11, no. 11 (2021): 5265. http://dx.doi.org/10.3390/app11115265.

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Slide stability is key to the aerostatic guide in ultra-precise machines; thus, it has garnered plenty of attention. Macro-scale studies are commonplace, but micro- and nano-vibration issues require more attention. Microscope vibration is mainly caused by tiny changes in the fluid parameters of lubricating gas film, which is complex and has no verdict. In this case, slide-gas interaction should be considered. In this study, the widely used orifice-type restrictor was investigated for its nano-vibration performance. A Comsol finite-element-method fluid–structure interaction model was used to si

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16

Li, Jian Jun, and Kevin B. Thurbide. "Novel pressure control in supercritical fluid chromatography using a resistively heated restrictor." Canadian Journal of Chemistry 87, no. 3 (2009): 490–95. http://dx.doi.org/10.1139/v09-005.

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An alternative means of independently controlling column pressure in supercritical fluid chromatography (SFC) by resistively heating the post-column restrictor is demonstrated. Compared to conventional block heating methods, resistive restrictor heating provides at least four times greater pressure programming rates and allows for much faster cooling times in between runs, thereby increasing sample throughput. When applying resistive restrictor heating in proximity to a flame ionization detector, the chromatographic baseline noise increases substantially and obscures peaks. However, adding abo

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17

Zhang, Xiao Feng, and Bin Lin. "Theoretical Research on Deformation of Porous Material in Air Bearing." Applied Mechanics and Materials 215-216 (November 2012): 779–84. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.779.

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Due to the pressure difference between the restrictor’s internal and external, the restrictor’s performance comes under the influence of deformation in practical use. The analysis method combines the air lubrication analysis and structural FEM. The thickness, modulus of elasticity, fixation method of the porous restrictor was analyzed. The result illustrated that: the load capacity increases and stiffness decreases when the modulus of elasticity or thickness decreases. When the edges, annulus and center of the plate are fixed at the same time, the restrictor has the same load capacity and stif

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18

Lin, Shih-Chieh, Yu-Hsiang Lo, Yu-Hsin Lin, Wei-Ting Tung, and Ta-Hua Lai. "Design and Performance Analysis of Dual Membrane Restrictor for Hydrostatic Bearing." Lubricants 10, no. 8 (2022): 179. http://dx.doi.org/10.3390/lubricants10080179.

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In this paper, a dual membrane restrictor design was proposed to improve the stiffness performance of the compensated hydrostatic bearing. Theoretical models for the proposed dual membrane restrictors were derived. Analysis of these models showed that a high stiffness region could be achieved at the desired loading region through the proper selection of the design parameters. A series of simulations were conducted to study the variations in the design parameters on the stiffness and clearance variations. It was found that the dimensionless membrane stiffness in the inlet restrictor, Kmi*, was

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19

Lu, Zhiwei, Xiyao Liu, Bo Liu, and Junan Zhang. "Comparison of fluctuations and micro-vibration of the aerostatic bearing with the multi-hole integrated restrictor." Advances in Mechanical Engineering 14, no. 5 (2022): 168781322210975. http://dx.doi.org/10.1177/16878132221097535.

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In order to research the lubrication characteristics of various restrictors on the aerostatic bearing, an aerostatic bearing with the multi-hole integrated restrictor (MIR) was proposed in this paper. The gas film flow field at the orifice outlet of the MIR aerostatic bearing was numerically calculated and analyzed by using the numerical calculation method combined with the large eddy simulation and the over-relaxation iteration. The results showed that there was a pressure drop at the orifice outlet and the pressures were separated in the thickness direction of the gas film clearance, and the

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20

Chen, Dyi-Cheng, Ming-Fei Chen, Chih-Hsuan Pan, and Jun-Yan Pan. "Study of membrane restrictors in hydrostatic bearing." Advances in Mechanical Engineering 10, no. 9 (2018): 168781401879960. http://dx.doi.org/10.1177/1687814018799604.

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Hydrostatic guides or bearings are very important crucial components in precision mechanical system. First, the article selects the structural parameters of the standard design film restrictor with regard to hydrostatic bearing. Moreover, using COMSOL, the article performs the fluid–structure interaction analysis of the diaphragm to obtain pressure and stress field distribution, and the deformation of diaphragm in membrane restrictors. Then, fluid resistance and other related properties of the membrane restrictors are obtained, and the related parameters including oil pressure, restrictor gap,

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21

T., STANCIU. "The potential air flow through diver’s breathing apparatus." Scientific Bulletin of Naval Academy XXIV, no. 1 (2021): 41–47. http://dx.doi.org/10.21279/1454-864x-21-i1-004.

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The gas admission through the divers' breathing apparatus is done with a critical flow. The gas storage pressure is reduced to the value of the external pressure 𝑝𝑒 . The paper approaches the gas-dynamic phenomena that occur when the gas flows through the second stage regulator, respectively: the variable restrictor A (between the seat and the cylindrical piston) and the fixed restrictor B (the orifice of cylindrical piston). The two main pressure restrictors can be considered Laval nozzles. Mathematical modeling of airflow through restrictors was done following the notions of the theory of po

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22

Dobrovie-Sorin, Carmen. "Two types of most." Semantics and Linguistic Theory 25 (December 31, 2015): 394. http://dx.doi.org/10.3765/salt.v25i0.3484.

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The empirical puzzle to be solved is the contrast between partitive and non-partitive most (which respectively take of-DP and NP restrictors, respectively) wrt their compatibility with a collective predicate (or a collectively interpreted mixed predicate) in the nuclear scope. The proposal will rely on the ‘null hypothesis’ regarding the correspondence between syntactic categories and semantic type: DPs and NPs respectively denote entities and sets of entities. Our puzzle will be solved by explaining why set-restrictor quantifiers cannot denote relations between sets of plural entities whereas

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23

Hsiao, Shun-Te, Yuan Kang, Shyh-Ming Jong, Hsing-Han Lee, De-Xing Peng, and Yeon-Pun Chang. "Static analysis of hydrostatic conical bearings using flow resistance network method." Industrial Lubrication and Tribology 66, no. 3 (2014): 411–23. http://dx.doi.org/10.1108/ilt-10-2011-0085.

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Purpose – This paper aims to study the static characteristics of the hydrostatic conical journal bearings by utilizing single-action membrane restrictors to compensate the working pressures of recesses. Design/methodology/approach – The flow resistance network method is used to analyze the influences of load capacity and static stiffness of bearing with the design parameters, including the number of recesses, radial eccentricity ratio, axial displacement ratio, restriction constant, membrane compliance, length-diameter ratio, circumferential land width ratio, axial land width ratio and half of

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24

Charlow, Nate. "Triviality For Restrictor Conditionals." Noûs 50, no. 3 (2015): 533–64. http://dx.doi.org/10.1111/nous.12111.

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25

Zhang, Yu Bing, Wen Zhang, and Dong Sheng Li. "Design and Analysis of the Multi-Microchannel Aerostatic Restrictor." Advanced Materials Research 472-475 (February 2012): 2377–84. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.2377.

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Restrictors are one of core parts in aerostatic systems. A special multi-microchannel aerostatic restrictor is designed and developed, and the air film thickness is measured by the capacitive measuring method. The mathematical model of capacitance and air film thickness is carried out, capacitances of specific air film thickness are calculated, air film thickness of the multi-microchannel aerostatic restrictor with the overall diameter is measured, and error sources processed and analyzed. Results illustrate that errors between the theoretical calculations and the experimental data are less th

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26

Kang, Y., H. C. Cheng, C. W. Lee, and S. Y. Hu. "Investigations in Hydrostatic Planar Bearings Compensated by Tapered-Spool Restrictors II: Load Capacity and Static Stiffness." Journal of Mechanics 32, no. 1 (2015): 71–82. http://dx.doi.org/10.1017/jmech.2015.42.

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ABSTRACTThis study including two parts investigates the influence of design parameters of tapered-spool restrictors and hydrostatic planar bearing on static characteristics of load capacity and static stiffness. The former part provides guides for the design of single-action and double-action tapered-spool restrictors. This part provides design guides for planar hydrostatic bearing and for matching up with tapered-spool restrictor. The equations of flow continuity are utilized to determine the film thickness for open-type planar bearing and worktable displacement for closed-type planar bearing

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27

Chukwuemeka, Peter Ukpaka. "Predictive model on the effect of restrictor on transfer function parameters on pneumatic control system." Chemistry International 2, no. 3 (2016): 128–35. https://doi.org/10.5281/zenodo.1470659.

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Mathematical model was developed to monitor and predict the influence of restrictor or the characteristics of the functional parameters of the transfer function for pneumatic control system. The force acting from bellow is directly proportional to the effective cross-sectional area of the base which yielded extension of the bellow in both horizontal and vertical as well as its extension rate is dependent on the influence of the restrictor. The pneumatic controller represents the main force control operator in many industrial applications, where it’s static and dynamic characteristics pla

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28

Zhang, Yu Bing, Cai Qin Li, and Dong Sheng Li. "Simulation of the Flow Parameters of the Multi-Microchannel Aerostatic Restrictor." Applied Mechanics and Materials 241-244 (December 2012): 1278–84. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.1278.

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A numerical simulation method, FLUENT,has been selected to simulate the flow field parameters of the multi-microchannel aerostatic restrictor. Pressure, temperature and velocity distributions of the restrictor under different gas film thickness and gas pressure were got and compared. Used Pro / E to establish three-dimensional model of restrictor and imported it into GAMBIT for meshing, and then used FLUENT for simulation.

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29

Ji, Ce, Huagui Huang, Yifeng Sun, Chaoqun Zhang, Lin Gao, and Shangbin Zhang. "Research on flow rate engineering calculation model of U-pipes for fabricating transverse variable profiled (TVP) strips by simulation and experiment." Metallurgical Research & Technology 117, no. 6 (2020): 604. http://dx.doi.org/10.1051/metal/2020057.

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Transverse variable profiled (TVP) strips have significant lightweight and functional characteristics due to the nonuniform section, but need to be cooled nonuniformly in order to obtain the uniform microstructure and performance. Hence, it has become the consensus of the industry to develop new on-line cooling equipment that can adjust and control the cooling capacity along the width direction (WD). Therefore, a multi-functional test platform was designed based on the U-pipes used in the industrial runout table cooling process. A steady-state Computational Fluid Dynamics (CFD) model was built

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30

Paul, Ashok Samuel, and John Pattison Hodgkinson. "A new femoral cement restrictor." Journal of Arthroplasty 7 (January 1992): 411–13. http://dx.doi.org/10.1016/s0883-5403(07)80032-5.

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Kim, Kwang-Ryul, and Young-Keun Jeong. "Laser Microfabrication for Silicon Restrictor." Journal of Korean Powder Metallurgy Institute 15, no. 1 (2008): 46–52. http://dx.doi.org/10.4150/kpmi.2008.15.1.046.

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32

Adhanom, Isayas Berhe, Majed Al-Zayer, Paul Macneilage, and Eelke Folmer. "Field-of-View Restriction to Reduce VR Sickness Does Not Impede Spatial Learning in Women." ACM Transactions on Applied Perception 18, no. 2 (2021): 1–17. http://dx.doi.org/10.1145/3448304.

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Women are more likely to experience virtual reality (VR) sickness than men, which could pose a major challenge to the mass market success of VR. Because VR sickness often results from a visual-vestibular conflict, an effective strategy to mitigate conflict is to restrict the user’s field-of-view (FOV) during locomotion. Sex differences in spatial cognition have been well researched, with several studies reporting that men exhibit better spatial navigation performance in desktop three-dimensional environments than women. However, additional research suggests that this sex difference can be miti

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Benbaji, Ido. "Restricting the fourth reading." Semantics and Linguistic Theory 31 (January 5, 2022): 221. http://dx.doi.org/10.3765/salt.v31i0.5081.

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Szabó (2010, 2011) argues that DPs in intensional contexts have specific-opaque readings, in which their determiner scopes above some intensional operator while their restrictor is nevertheless interpreted in the scope of the operator. This poses a potential problem to prominent theories of intensionality (e.g. Percus 2000, Keshet 2008) in which wide quantificational scope (specificity) implies transparency. We attempt to restrict the scope of the problem by demonstrating that an important sub-class of Szabó's examples is syntactically restricted to relativization environments, and can be gene

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Cui, Changzhi, and Kyosuke Ono. "Theoretical and Experimental Investigation of an Externally Pressurized Porous Annular Thrust Gas Bearing and Its Optimal Design." Journal of Tribology 119, no. 3 (1997): 486–92. http://dx.doi.org/10.1115/1.2833524.

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Static and dynamic characteristics of an externally pressurized porous annular thrust gas bearing (PATGB), which has a thin restricted surface layer, are investigated by numerical analysis and experiment. In the analysis, it is assumed that the fluid flow obeys Darcy’s law in the porous material, restricted with Darcy’s restrictor (Darcy-Darcy model) or orifice restrictor (Darcy-Orifice model) in the surface layer. From experimental investigation, it is found that the theoretical results calculated by the Darcy-Darcy model agree with the experimental data better than those of the Darcy-Orifice

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35

Yoshimoto, S., Y. Anno, and M. Fujimura. "Static Characteristics of a Rectangular Hydrostatic Thrust Bearing With a Self-Controlled Restrictor Employing a Floating Disk." Journal of Tribology 115, no. 2 (1993): 307–11. http://dx.doi.org/10.1115/1.2921007.

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This paper proposes a new type of a self-controlled restrictor which can achieve a very high bearing stiffness in hydrostatic bearings. This self-controlled restrictor employs a floating disk to control the mass flow rate of the oil entering the bearing clearance according to changes of the applied load. Furthermore, a hydrostatic bearing with this restrictor can theoretically achieve an infinite stiffness when the mass of a floating disk is assumed to be zero. The static characteristics of a rectangular hydrostatic thrust bearing with this self-controlled restrictor are theoretically and expe

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36

Khakse, Prashant G., Vikas M. Phalle, and SS Mantha. "Orifice compensated performance characteristics of hybrid hole-entry conical journal bearing." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 231, no. 3 (2016): 316–31. http://dx.doi.org/10.1177/1350650116654803.

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Influence of semi-cone angles on the performance of the non-recessed hybrid/hydrostatic hole-entry conical journal bearing compensated with orifice restrictor has been carried out analytically. The analysis comprises two rows of symmetric hole-entry contour in the circumferential direction of hybrid/hydrostatic conical journal bearing. An orifice restrictor is used in the hole-entry contour to allow the restricted flow in the clearance space of a journal and bearing. Well-known finite element method and Newton–Raphson method for restrictor have been used to solve the Reynolds equation, governi

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Zhou, Sheng Hao, Jin Chun Song, Zhi Wei Zhang, and Song Li. "Performance Analysis of Hydrostatic Slideways Systems with Different Types of Restrictors." Key Engineering Materials 474-476 (April 2011): 1661–65. http://dx.doi.org/10.4028/www.scientific.net/kem.474-476.1661.

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In fluid hydrostatic closed-type slideways systems, restrictor will take an important role of improving the performance of machine tools. Generally there are four types of restrictors to be utilized, capillary type, orifice type, slot type, and dynamic feedback type. The general oil film stiffness model of different types of restrictors was constructed and the characteristics of different types of restrictors are analyzed and compared. The analysis results demonstrated that the stiffness of restrictors depend on the geometry and structure parameters, and according to the analysis results the a

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Freund, K. G., S. Houshian, and P. Riegels-Nielsen. "Occlusion and Stability of Two Different Femoral Canal Plugs in Cemented Hip Arthroplasty. A Prospective and Randomized Study, with a Two Year Follow-Up." HIP International 13, no. 3 (2003): 142–47. http://dx.doi.org/10.1177/112070000301300304.

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The aim of this prospective and randomised study was to test the ability of two different femoral plugs to seal off the femoral canal to prevent cement leakage, displacement of the restrictor and early aseptic loosening. Seventy patients, 35 in each of two groups, were included. There were 31 men and 39 women. The average age was 70 years; the follow-up was two years. In group 1 (the Exeter plug) there were four cases with cement leakage and in group 2 there were three (the DePuy plug). There were four cases with failures in group 1, due to technical failure peroperatively, and none in group 2

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Pan, Wei, Yongtao Zhang, and Changhou Lu. "An accurate method for determination of the performance characteristics of membrane-type restrictors." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 5 (2018): 692–701. http://dx.doi.org/10.1177/1350650118791903.

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The determination of flow rate and fluid resistance for membrane-type restrictors is modified in this paper, and it can be more accurate and confident from the measurements in experiments. Three coupled equations including Reynolds equation, membrane deformation equation of large axisymmetric deflection and flow rate equation have been used to establish the mathematical model of membrane-type restrictor and solved simultaneously. Several cases are simulated by the traditional method and the modified numerical method, and the simulation results are compared with experimental data for flow rates

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Inaguma, Yoshiharu, and Akira Hibi. "A study on cavitation in two-stage hydraulic restrictors. (1st Report: When the flow characteristic of a downstream restrictor is not affected by an upstream restrictor)." Hydraulics & Pneumatics 19, no. 7 (1988): 572–79. http://dx.doi.org/10.5739/jfps1970.19.572.

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Kechra, Ahmed, and Ahmed Bouzidaine. "Semi-Analytical Analysis of a Rigid Rotor Mounted on Four-Pad Hydrostatic Squeeze Film Damper with Single-Action Membrane-Type Restrictors." Acta Mechanica et Automatica 17, no. 4 (2023): 507–14. http://dx.doi.org/10.2478/ama-2023-0059.

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Abstract The current study is a semi-analytical analysis of the vibratory behaviour of a rigid vertical rotor, supported by a new hydrostatic squeeze film damper (HSFD), consisting of four hydrostatic pads fed through four single-action membrane-type variable-flow restrictors. The Reynolds equation based on the Newtonian theory of lubrication is used and then adapted to our work, which is solved semi-analytically. In this paper, we study the effect of different parameters, the eccentricity, membrane geometry coefficient, pressure ratio and rotational speed, on the main characteristics of a fou

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Rodríguez-Collell, Juan Ramón, Damian Mifsut, Amparo Ruiz-Sauri, Luis Rodríguez-Pino, Eva María González-Soler, and Alfonso Amador Valverde-Navarro. "Improving the cementation of the tibial component in knee arthroplasty." Bone & Joint Research 10, no. 8 (2021): 467–73. http://dx.doi.org/10.1302/2046-3758.108.bjr-2020-0524.r1.

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Aims The main objective of this study is to analyze the penetration of bone cement in four different full cementation techniques of the tibial tray. Methods In order to determine the best tibial tray cementation technique, we applied cement to 40 cryopreserved donor tibiae by four different techniques: 1) double-layer cementation of the tibial component and tibial bone with bone restrictor; 2) metallic cementation of the tibial component without bone restrictor; 3) bone cementation of the tibia with bone restrictor; and 4) superficial bone cementation of the tibia and metallic keel cementation

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Kim, Jieun. "‘-(N)Un’ as a Domain Restrictor." Journal of Modern British and American Language and Literature 33, no. 1 (2015): 121. http://dx.doi.org/10.21084/jmball.2015.02.33.1.121.

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Guthrie, E. J., and H. E. Schwartz. "Integral Pressure Restrictor for Capillary SFC." Journal of Chromatographic Science 24, no. 6 (1986): 236–41. http://dx.doi.org/10.1093/chromsci/24.6.236.

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Schulz, Moritz. "Modus Ponens Under the Restrictor View." Journal of Philosophical Logic 47, no. 6 (2018): 1001–28. http://dx.doi.org/10.1007/s10992-018-9459-0.

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Verjrosta, Jiří, Milena Mikešová, Alena Ansorgová, Jan Zátorský, Miloš Hajer, and Václav Janda. "Multichannel restrictor for supercritical fluid chromatography." Journal of Microcolumn Separations 6, no. 1 (1994): 23–25. http://dx.doi.org/10.1002/mcs.1220060106.

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Hu, Sheng-Yen, Yuan Kang, Hsin-Ming Fu, and Chao-Ping Huang. "Identification of design parameters for spool-type restrictors." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 1 (2019): 63–72. http://dx.doi.org/10.1177/1350650119854248.

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This study presents the identification method of design parameters for single-action cylindrical spool-type restrictors of hydrostatic bearing. These parameters include restriction parameter, spool displacement parameter, and spring preload. The flow rates, inlet pressures, and outlet pressures are measured to be utilized for parameter identification of single-action cylindrical spool-type restrictors by using experimental equipment. This equipment-like an open-type planar hydrostatic bearing supports a worktable for changing recess pressure by changing apply load. Then, design parameters can

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Wilson, S. F., J. A. Ochoa, L. L. Rogers, R. L. Lancaster, and A. Ritchie. "Finite Element Analysis in the Design and Characterization of an Absorbable Cement Restrictor." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 209, no. 3 (1995): 163–67. http://dx.doi.org/10.1243/pime_proc_1995_209_339_02.

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The benefit of using a cement restrictor to achieve cement pressurization during total hip arthroplasty is well established. An absorbable cement restrictor design has been developed with the use of a finite element model. The non-linear axisymmetric model was used to optimize specific parameters so as to perform within acceptable limits when tested over a specified range of medullary canal sizes. The results achieved from a hybrid experimental/analytical design methodology allowed for a shorter development cycle for the initial size and each additional size in the design family thereafter. Th

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Etxeberria, Urtzi. "Contextual Restriction and Quantification in Basque." Bare Plurals, Indefinites, and Weak–Strong Distinction 19 (December 31, 2005): 211–45. http://dx.doi.org/10.1075/bjl.19.11etx.

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This paper proposes, in line with Giannakidou (2004), a novel compositional analysis of Basque strong quantifiers and provides further support for the conclusion that the standard analysis of Generalized Quantifiers need not be revised (pace Matthewson 2001). The Basque quantificational data offered provides clear evidence for the need for both quantificational (Westerståhl 1985, von Fintel 1994, Martí 2003) and nominal domain restriction (Stanley 2002, Stanley & Szabó 2000). Crucially, in Basque, the D domain restrictor only appears with strong quantifiers; it is excluded with weak quanti

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Lv, Zhi Qiang, and Li Hong Shu. "Shock Mechanics Model and Characteristic Analysis of Polyurethane Isolator with Displacement Restrictor." Advanced Materials Research 503-504 (April 2012): 972–77. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.972.

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Vibration isolator with displacement restrictor is used to best control vibration and shock simultaneously. This can’t be realized without a proper mechanics model. The drop weight test on the polyurethane isolator with displacement restrictor was discussed. The generalized mechanics model of vibration isolator based on the MAXWELL element and gap element was established, which can help the shock characteristics analysis and parameter optimization of the isolator.

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